A. A. Milne made up Winnie-the-Pooh for his son, Christopher Robin Milne. Astrid Lindgren’s bedridden daughter Karin asked her to tell a story about some girl named Pippi Longstocking. C. S. Lewis convinced J. R. R. Tolkien to turn the fantastical stories he told his children into The Hobbit. The list goes on and on.
